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ICSE Class 9 Answered

360/n - 360/n+1 = 5
Asked by Jannat | 30 Jan, 2016, 03:55: PM
answered-by-expert Expert Answer
begin mathsize 11px style 360 over straight n minus fraction numerator 360 over denominator straight n plus 1 end fraction equals 5 rightwards double arrow 360 open parentheses straight n plus 1 close parentheses minus 360 straight n equals 5 straight n open parentheses straight n plus 1 close parentheses rightwards double arrow 360 straight n plus 360 minus 360 straight n equals 5 straight n squared plus 5 straight n rightwards double arrow 360 equals 5 straight n squared plus 5 straight n rightwards double arrow straight n squared plus straight n equals 72 rightwards double arrow straight n squared plus straight n minus 72 equals 0 rightwards double arrow straight n squared plus 9 straight n minus 8 straight n minus 72 equals 0 rightwards double arrow straight n open parentheses straight n plus 9 close parentheses minus 8 open parentheses straight n plus 9 close parentheses equals 0 rightwards double arrow open parentheses straight n plus 9 close parentheses open parentheses straight n minus 8 close parentheses equals 0 rightwards double arrow straight n equals negative 9 space or space straight n equals 8 end style
Answered by satyajit samal | 31 Jan, 2016, 04:10: PM

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ICSE 9 - Maths
prove that the line joining the mid points of the parallel siodes of as trapezium divides it imto two equal parts  
Asked by ray.taxsolutions | 31 Jan, 2018, 08:19: PM
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